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102221 (1999 TT9)
Classification: Main-belt Asteroid          SPK-ID: 2102221
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2221797280260146 3.6127e-08  
a 2.466904626630592 1.19e-08 au
q 1.91880842761969 8.6034e-08 au
i 2.937818797262921 3.6723e-06 deg
node 205.1857791837011 0.00011709 deg
peri 205.2101155910299 0.00011836 deg
M 149.1209048576059 2.0424e-05 deg
tp 2458614.276808336431
(2019-May-10.77680834)
7.7104e-05 TDB
period 1415.229804301451
3.87
1.024e-05
2.804e-08
d
yr
n .2543756490329809 1.8406e-09 deg/d
Q 3.015000825641494 1.4544e-08 au
  Orbit Determination Parameters
   # obs. used (total)      521  
   data-arc span      7503 days (20.54 yr)  
   first obs. used      1999-10-07  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50836  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 18:06:29  

Additional Information
 Earth MOID = .928939 au 
 Jupiter MOID = 2.36824 au 
 T_jup = 3.450 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.32   n/a E2021B55  

102221 (1999 TT9)          Discovered 1999-Oct-07 by Korlevic, K., Juric, M. at Visnjan
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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